Low inductance and high efficiency single-pole writing head for perpendicular double layer recording media

Effect of parameters of media on perpendicular magnetic recording properties

“…In contact recording, where strong interaction between the head and the medium takes place, the write head is required to have a structure to suppress the influence of the pre-recorded magnetization. of the permeability, which is in agreement with the previous simulation result [13]. Decrease in the permeability of the backlayer exhibited no effect on the medium noise and S/N as far as our media is concerned as shown in Fig.…”

“…7. The result indicates that we could use backlayers with a low permeability which will increase stability of the system to stray fields [13].…”

Basic design concepts for perpendicular magnetic recording—from viewpoints of high writing ability and resolution

“…(6)- (10), it can be shown that the transition parameter a 2 can be decreased by increasing the head field gradient g in both perpendicular and longitudinal magnetic recordings. This is shown in Fig.…”

“…The error rate in perpendicular magnetic recording with the novel single-pole thin film head was also measured by using double-layered perpendicular recording media [10]. As shown in Fig.…”

Advancements in PMR thin-film media

“…In 1999, Muraoka et al [16] introduced a new design of a low inductance, high efficiency, and high field thin-film 2 turn TF-SPT writing head for double-layer media. In 2000, Ise et al [17] introduced a new improved SPT design using 6 turns of dual pancake coils differentially wound called a cusp-field (CF) SPT head that saturates H c ¼ 3500 Oe double-layer PMR media with I 02p ¼ 0:1 AT; resists stray field, and is fabricated by conventional techniques.…”